Error: Cannot find module 'i2c-bus' after running our node.js

[vkjuju]

We hit a weird error(Error: Cannot find module 'i2c-bus'
) even we have done" npm install i2c-bus", we have also checked:
$npm list|grep i2c-bus
├─┬ i2c-bus@3.2.0
│ ├─┬ i2c-bus@1.2.5
│ ├── i2c-bus@3.2.0 deduped
any advice would be appreciated.

Error: Cannot find module 'i2c-bus'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:581:15)
at Function.Module._load (internal/modules/cjs/loader.js:507:25)
at Module.require (internal/modules/cjs/loader.js:637:17)
at require (internal/modules/cjs/helpers.js:20:18)
at Object. (/home/pi/Dexter/GrovePi/Software/NodeJS/libs/grovepi.js:2:19)
at Module._compile (internal/modules/cjs/loader.js:689:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
at Module.load (internal/modules/cjs/loader.js:599:32)
at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
at Function.Module._load (internal/modules/cjs/loader.js:530:3)
at Module.require (internal/modules/cjs/loader.js:637:17)
at require (internal/modules/cjs/helpers.js:20:18)
at Object. (/home/pi/Dexter/GrovePi/Software/NodeJS/libs/sensors/base/sensor.js:3:20)
at Module._compile (internal/modules/cjs/loader.js:689:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
at Module.load (internal/modules/cjs/loader.js:599:32)

[fivdi]

It looks like the code at https://github.com/DexterInd/GrovePi was cloned and that npm install was not called in the appropriate directory. I'm afraid I'm not familiar with GrovePi. Please open an issue at GrovePi as this isn't an i2c-bus issue. Perhaps someone there can help.

[vkjuju]

@fivdi , thanks, I have created a new issue on : DexterInd/GrovePi#419